[armadsen]

This is good advice. Be aware that while APOE variants are the most well known and common causes of a genetic predisposition to Alzheimer’s, there are several others, including some 100% penetrance, dominant gene mutations that cause it. Unfortunately I have very significant experience with one of these. Generally it would be common enough in your family (roughly 50% of people getting it), that you’d have reason to suspect one of these gene mutations.